Western Thrace is apart of Europe so the Turkish -Bulgarian/Greek borders should be included, as should the European Russian borders with Georgia,Azerbaijan, and Kazakhstan
Western Thrace wasn’t included in the original map, but I’ll see if I can add a western Thrace SVG from a different source. As for Georgia, Azerbaijan, and Kazakhstan, those are rarely regarded as being part of Europe (not on JetPunk anyway), so I don’t think I will add them.